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Chapter 7: One-Sample Inference
Chapter 7: One-Sample Inference

Measuring Dispersion
Measuring Dispersion

Help Sheet for reading SPSS printouts
Help Sheet for reading SPSS printouts

... Test for Equality of Variances.” This tests the assumption that the variances for the two groups are equal. You want this to be non significant (because you want there to be no difference in the variances between the groups – this is an assumption for an independent samples t-test). To determine if ...
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spss handbook by: erin l. robinson

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Slide 1

descriptive methods for categorical and numeric variables
descriptive methods for categorical and numeric variables

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Chapter 6: Confidence Intervals

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homeworke_ch3

... 1. A value that is typical or representative of the data is referred to as a measure of central location. 2. The arithmetic mean is the sum of the observations divided by the total number of observations. 3. For a set of data arranged or sorted in numerical order, the value of the observation in the ...
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Chapter 4: Evaluating Analytical Data

... errors by taking proper care. Identifying Determinate Errors Determinate errors can be difficult to detect. Without knowing the expected value for an analysis, the usual situation in any analysis that matters, there is nothing to which we can compare our experimental result. Nevertheless, there are ...
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第七章信賴區間估計 - 國立交通大學開放式課程

Statistics: Informed Decisions Using Data, 4e (Sullivan)
Statistics: Informed Decisions Using Data, 4e (Sullivan)

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7.9 confidence intervals for parameters of finite populations

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... instrumentation, the manual titrimetric technique, using the visual ferroin indicator, is included. Judging end points with a visual color change, especially if the samples are highly seasoned and highly colored, can differ from person to person. The potentiometric method overcomes this problem beca ...
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Statistical Approaches for Particle Size Distribution Data

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5-Minute Check on Activity 7-8

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Signal, Noise, and Detection Limits in Mass

Math 216 Spring 2008 Answers to Clicker Questions §1.2 Summary
Math 216 Spring 2008 Answers to Clicker Questions §1.2 Summary

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16 Chapter Generalizing a Sample’s Findings to Its

... which you make a generalization about an entire class based on what you have observed about a small set of members of that class. When you infer, you draw a conclusion from a small amount of evidence. For example, if two of your friends each bought a new Chevrolet and they both complained about thei ...
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Student's t-test

A t-test is any statistical hypothesis test in which the test statistic follows a Student's t-distribution if the null hypothesis is supported. It can be used to determine if two sets of data are significantly different from each other, and is most commonly applied when the test statistic would follow a normal distribution if the value of a scaling term in the test statistic were known. When the scaling term is unknown and is replaced by an estimate based on the data, the test statistic (under certain conditions) follows a Student's t distribution.
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